Automatic tool-operating device.



J. M. ABRAMS. AUTOMATIC TOOL OPERATING DEVICE. APPLIUATION FILED MAY ze, 1910.

Patented July 26, 1910. .L d E a device of the character above mentioned JOI-IN M. ABRAMS, OF BENTLEY MANOR, NEW YORK.

Alimentario Toor-@PERATING DEVICE. p

l Specification of Letters Yatent.

Patented July 26, 1910.

Application led Hay 28, 1910. Serial No. 563,930.

To all 'whom it may concern: y A

Be it known that l, JOHN M. ABRAMS, a citizen of the United States, residing at Bentley Manor, in the county of Richmond and State of New York, have invented certain'new and useful Improvements in Automatic Tool-Operating Devices, of which the following is a specification.

My invention relates to improvements in tool operating devices and particularly to improvements in automat-ic tool operating devices.

lt has fer its object to provide a device, of the character above .mentioned, havin a piston located in a casing and adapted to be operated by a motive fluid.

It has for a further object to provide means for controlling the admission of the mot-ive fluid into the casing of the device.

Y It has for a further object to provide means adapted to prevent rotatable movement of the piston within its casing.

It has for a further object to provide the piston withmeans adapting it to have a tool Vsecured thereto. It has for a further object to provide the \piston with means adapted to direct the eX- iaust from its casing upon the surface or body being operated upon and remove the parts cut or detached therefrom by the tool.

It has for a further object to so construct the piston and its casing, that the motive fluid will bear against a larger surface of the piston in returning it than 1n moving it forward.

It has for a further object to provide a piston having eccentric portions engaging eccentric bores, in the casing and being complementary thereto. l

It has for a still further object to provide having advantages in point of simple, durable and inexpensive construction and perfect operation. s

In the drawings:-Figure 1 is a side view of my automatic tool 4operating device; Fig. 2, a bottom plan view thereof partly broken away; Fig. '3, a longitudinal vertical sectional view, thereof; Fig. 4, a side elevation of the piston removed and partly broken away; Fig. 5, a sectional view taken on the line m-m of Fig. 2; Fig. 6, a side view of my automatic tool operating device with tool removed; Fig. 7, a bottom plan view-thereof.

Referringto the drawings illustrating my invention and in which like reference characters designate corresponding parts, l designates the casing which is provided with eccentric bores ,2 and 3 extending from the forward and rear ends thereof respectively,

. the forward bore being of greater diameter than the rear bore. A handle 44 is secured on the rear threaded end of the casing and is provided with a passage 5 for the admission of a motive fluid, for instance, gas, into the casing. The passage 5 is normally closed by a valve 6 slidable in a bore 7 and provided with a spring 8 on its stem 9,

between the head 10 thereon and a plug 11 fixed in said bore and through'which said stem works. The head of the valve bears against jthefork 12 of a lever 13 which is fulcrumed in a recess 14 and the fork 15 of said lever bears against an abutment 16, by which arrangement the lever will be turned on its pivot, by the operator insert ing his fingers through the hole 17 and then closing his hand and the valve 6 will bev forced upward by the lever against the action of the spring 9 and unclose the passage 5. Ahandle is also provided on the forward end of the casing. A cap 18 is secured in the forward threaded end of the casing and is provided with a stuiiing box 19, A piston 20 is located in said casing 1 and is provided with eccentric portions 21l and 22 which are complementary to and engage the eccentric bores 2 and 3 respectively of the casing.'thereby preventing ro tary movement of the piston. The portion 21 ofthe piston'projects through an opening 23 in the under part of the casing and isprovided with a socket 24 adapted to retain a tool and a threaded holeinto which a screw 25 extends and engages and secures the tool in place. By reason of the bore 2 and the complementary portion of the piston being of greater diameter than the bore 3 and the complementary portion 22 of the piston, a greater surface is offered for the motive Vfluid to bear against in returning the piston th'an in moving it forward and consequently it is quickly returned. A rod 26 isV secured in the forward end of the piston and extends through the cap 18 and thestuliing box 19, and is provided with a socket 27 adapted to receive a tool and a threaded hole into which a screw 28 extends casing and an exhaust passage 31 adapted to establish communication between the bore 2 and an exhaust passage 32 extending through the piston in front of the tool. The inner end of the exhaust passage 32 extends into an elongated slot 33 with which the rear end of the exhaust passage 31 is in constant communication, thus when the piston is reciprocated, by the motive Huid, the exhaust from the bore 2 is constantly directed in frontl of the tool in the socket 24 and removes the partscut or detached by tool from the body being operated upon.

The operatlon is as follows :-The device is placed upon the body to be operated upon and held thereon by the handles, lnotive fluid, for instance, compressed gas,"is admitted into the bore 3 through the inlet passage 5 and forces the piston forward uncovering the bypass 30, whereupon the gas passes through said bypass into the bore 2 of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all suchI variations and modifications as properly fall within the scope of my invention and the terms of the following claims.

1. In a device of the character set forth,

a casing having a bypass and an exhaust passage, and a piston in said casing operated by a motive fluid and havin means adapting a tool to be secured t ereto and an exhaust passage adapted to communicate with the exhaust passage of the casing thereby providing means adapting the exhaust from the casing to remove the arts cut or detached by the tool, from the liody being operated upon, substantially as .dr scribed.

2. In a device of the character set forth,

a casing lhaving -a bypass and an exhaust passage and a piston 1n said casing operated by a motiveuid and having means adapting a tool to be secured thereto and an exhaust passage in constant communication with the exhaust passage of the casing, thereby providing means adapting the exhaust from the casing to remove the parts cut or detached by the tool,l from the body being operated upon, substantially as described.

3. In a device of the character set forth,

a casing having a bypass and an exhaust I passage and a piston in saidv casing operated by a motive fluid and having means adapting a tool to be secured thereto, a groove in constant communication with the exhaustv witnesses.

JCI-IN M. ABRAMS. Witnesses:y

GUNNAR ENGs'rkAND, PAUL B. OATMAN. 

